Curved liquid crystal display device

ABSTRACT

The present invention provides a curved liquid crystal display device, which includes: a backlight module ( 2 ), a mold frame ( 4 ), a liquid crystal display panel ( 6 ), and a front bezel ( 8 ). The backlight module ( 2 ) includes a backplane ( 22 ), a curved light guide plate ( 24 ) arranged in the backplane ( 22 ), a backlight source ( 26 ) arranged in the backplane ( 22 ), and a heat dissipation board ( 28 ) receiving the backlight source ( 26 ) mounted thereto. The heat dissipation board ( 28 ) includes a bracket section ( 282 ) and a mount section ( 284 ) connected, in an inclined manner, to the bracket section ( 282 ). The bracket section ( 282 ) is mounted to the backplane ( 22 ). The backlight source ( 26 ) is mounted to the mount section ( 284 ). The front bezel ( 8 ) includes a front plate ( 82 ) and a side plate ( 84 ) connected to the front plate ( 82 ). The mount section ( 284 ) includes a mounting tab ( 286 ) extending therefrom toward the side plate ( 84 ). The mounting tab ( 286 ) is coupled to the side plate ( 84 ) so as to couple the front bezel ( 8 ) and the heat dissipation board ( 28 ) together.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to the field of liquid crystal displaying,and in particular to a curved liquid crystal display device.

2. The Related Arts

Liquid crystal displays (LCDs) have a variety of advantages, such asthin device body, low power consumption, and being free of radiation,and are thus of wide applications, such as mobile phones, personaldigital assistants (PDAs), digital cameras, computer monitors, andnotebook computer screens.

Most of the liquid crystal displays that are currently available in themarket are backlighting liquid crystal displays, which comprise anenclosure, a liquid crystal panel arranged in the enclosure, and abacklight module mounted in the enclosure. The structure of aconventional liquid crystal panel is composed of a color filter (CF)substrate, a thin-film transistor (TFT) array substrate, and a liquidcrystal layer arranged between the two substrates and the principle ofoperation is that a driving voltage is applied to the two glasssubstrates to control rotation of the liquid crystal molecules of theliquid crystal layer in order to refract out light emitting from thebacklight module to generate images. Since the liquid crystal panelitself does not emit light, light must be provided from the backlightmodule in order to normally display images. Thus, the backlight moduleis one of the key components of the liquid crystal displays. Thebacklight modules can be classified in two types, namely a side-edgebacklight module and a direct backlight module, according to the sitewhere light gets incident. The direct backlight module comprises a lightsource, such as a cold cathode fluorescent lamp (CCFL) or alight-emitting diode (LED), which is arranged at the backside of theliquid crystal panel to form a planar light source directly supplied tothe liquid crystal display panel. The side-edge backlight modulecomprises an LED light bar, serving as a backlight source, which isarranged at an edge of a backplane to be located rearward of one side ofthe liquid crystal display panel. The LED light bar emits light thatenters a light guide plate (LGP) through a light incident face at oneside of the light guide plate and is projected out of a light emergenceface of the light guide plate, after being reflected and diffused, topass through an optic film assembly so as to form a planar light sourcefor the liquid crystal panel.

Recently, major manufacturers have marketed curved liquid crystaldisplay devices one after another. Generally speaking, the curved liquidcrystal display devices allow for the best viewing effect from edge toedge, while a regular liquid crystal display device has generally poorcapability of displaying at edges of a screen. The curved liquid crystaldisplay devices has a screen that has a curved design showing asurrounding configuration toward a viewer so as to provide a widefull-view image, allowing for the same visual enjoyment at both thecentral portion or the circumferential portion of the screen and alsoreducing distortion of off-axis viewing for viewing at a short distance.Further, the curved liquid crystal display device allows a viewer'sviewing distance to be extended, achieving better experience of viewing.Thus, compared to the regular liquid crystal display devices, the curvedliquid crystal display devices have advantages, including: (1) branddifferentiating, (2) wider viewable angle, and (3) reducing distortionfor short distance viewing.

Referring to FIG. 1, a conventional curved liquid crystal display deviceis shown, comprising a backlight module 100, a mold frame 300 mounted onthe backlight module 100, a liquid crystal display panel 500 arranged onthe mold frame 300, and a front bezel 700 arranged on the liquid crystaldisplay panel 500. The backlight module 100 comprises a light guideplate 102 that is arranged in a curved form. The backlight module 100comprises a backlight source 104 that is set to correspond to a lightincidence surface of the light guide plate 102. This causes a heatdissipation board 106 of the backlight source 104 to be set in aninclined arrangement. To match up with the entire structure of thecurved liquid crystal display device, side plates 702 of the front bezel700 must be arranged substantially vertical. This leads to a large gap762 (around 1 mm-2 mm) between the side plate 702 and the heatdissipation board 106, which is adverse for bezel slimming of the curvedliquid crystal display device.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a curved liquid crystaldisplay device, which has a simple structure and allows for directmounting of a front bezel to a heat dissipation board so as to helpachieve bezel slimming of the curved liquid crystal display device.

To achieve the above object, the present invention provides a curvedliquid crystal display device, which comprises: a backlight module, amold frame mounted on the backlight module, a liquid crystal displaypanel arranged on the mold frame, and a front bezel arranged on theliquid crystal display panel. The backlight module comprises abackplane, a curved light guide plate arranged in the backplane, abacklight source arranged in the backplane, and a heat dissipation boardreceiving the backlight source mounted thereon. The heat dissipationboard comprises a bracket section and a mount section that is connected,in an inclined manner, to the bracket section. The bracket section ismounted to the backplane. The backlight source is mounted to the mountsection. The front bezel comprises a front plate and a side plateconnected to the front plate. The mount section comprises a mounting tabextending therefrom toward the side plate. The mounting tab is coupledto the side plate so as to couple the front bezel and the heatdissipation board together.

The side plate comprises a through hole formed therein and the mountingtab of the heat dissipation board comprises a threaded hole formedtherein to correspond to the through hole. A screw is received throughthe through hole to engage the threaded hole so as to fix the frontbezel and the heat dissipation board to each other.

The mount section supports the mold frame thereon. The mold frame has anend section positioned against an outer side of the mount section thatis opposite to the backlight source and located between the mounting taband the mount section.

The side plate of the front bezel is arranged to be inclined withrespect to the mount section.

The backlight source is mounted to the mount section to correspond to alight incidence surface of the curved light guide plate.

The backlight module further comprises a bottom reflector plate arrangedon a bottom surface of the curved light guide plate that faces thebackplane and an optical film assembly arranged above the curved lightguide plate and located in the mold frame.

The backplane is made of a steel plate.

The steel plate has a thickness of 0.8-1 mm.

The heat dissipation board is made of an aluminum plate.

The present invention also provides a curved liquid crystal displaydevice, which comprises: a backlight module, a mold frame mounted on thebacklight module, a liquid crystal display panel arranged on the moldframe, and a front bezel arranged on the liquid crystal display panel,the backlight module comprising a backplane, a curved light guide platearranged in the backplane, a backlight source arranged in the backplane,and a heat dissipation board receiving the backlight source mountedthereon, the heat dissipation board comprising a bracket section and amount section that is connected, in an inclined manner, to the bracketsection, the bracket section being mounted to the backplane, thebacklight source being mounted to the mount section, the front bezelcomprising a front plate and a side plate connected to the front plat,the mount section comprising a mounting tab extending therefrom towardthe side plate, the mounting tab being coupled to the side plate so asto couple the front bezel and the heat dissipation board together;

wherein the side plate comprises a through hole formed therein and themounting tab of the heat dissipation board comprises a threaded holeformed therein to correspond to the through hole, a screw being receivedthrough the through hole to engage the threaded hole so as to fix thefront bezel and the heat dissipation board to each other;

wherein the mount section supports the mold frame thereon;

wherein the mold frame has an end section positioned against an outerside of the mount section that is opposite to the backlight source andlocated between the mounting tab and the mount section;

wherein the side plate of the front bezel is arranged to be inclinedwith respect to the mount section; and

wherein the backlight source is mounted to the mount section tocorrespond to a light incidence surface of the curved light guide plate.

The backlight module further comprises a bottom reflector plate arrangedon a bottom surface of the curved light guide plate that faces thebackplane and an optical film assembly arranged above the curved lightguide plate and located in the mold frame.

The backplane is made of a steel plate.

The steel plate has a thickness of 0.8-1 mm.

The heat dissipation board is made of an aluminum plate.

The efficacy of the present invention is that the present inventionprovides a curved liquid crystal display device, which comprises amounting tab extending from a heat dissipation board toward a side plateand a front bezel is fixed to the mounting tab to have the front bezeland the heat dissipation board fixed to each other without anyarrangement of a side plate of a backplane at the fixing site andeffectively shorten the distance between the front bezel and the curvedlight guide plate to help achieve bezel slimming of the curved liquidcrystal display device.

For better understanding of the features and technical contents of thepresent invention, reference will be made to the following detaileddescription of the present invention and the attached drawings. However,the drawings are provided for the purposes of reference and illustrationand are not intended to impose limitations to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution, as well as other beneficial advantages, of thepresent invention will be apparent from the following detaileddescription of embodiments of the present invention, with reference tothe attached drawing. In the drawing:

FIG. 1 is a cross-sectional view showing a conventional curved liquidcrystal display device; and

FIG. 2 is a cross-sectional view showing a curved liquid crystal displaydevice according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

To further expound the technical solution adopted in the presentinvention and the advantages thereof, a detailed description is given toa preferred embodiment of the present invention and the attacheddrawings.

Referring to FIG. 2, the present invention provides a curved liquidcrystal display device, which comprises: a backlight module 2, a moldframe 4 mounted on the backlight module 2, a liquid crystal displaypanel 6 arranged on the mold frame 4, and a front bezel 8 arranged onthe liquid crystal display panel 6. The backlight module 2 provides aplanar light source and the mold frame 4 carries and supports the liquidcrystal display panel 6 thereon. The liquid crystal display panel 6functions to display an image. The front bezel 8 retains the liquidcrystal display panel 6 on the mold frame 4.

Specifically, the backlight module 2 comprises a backplane 22, a curvedlight guide plate 24 arranged in the backplane 22, a backlight source 26arranged in the backplane 22, and a heat dissipation board 28 receivingthe backlight source 26 mounted thereon.

The heat dissipation board 28 comprises a bracket section 282 and amount section 284 that is connected, in an inclined manner, to thebracket section 282. The bracket section 282 is mounted to the backplane22 and the backlight source 26 is mounted to the mount section 284.

The front bezel 8 comprises a front plate 82 and a side plate 84connected to the front plate 82. The mount section 284 comprises amounting tab 286 extending therefrom toward the side plate 84. Themounting tab 286 is coupled to the side plate 82 so as to couple thefront bezel 8 and the heat dissipation board 28 together. The side plate84 of the front bezel 8 is arranged to be inclined with respect to themount section 284.

In the instant embodiment, the side plate 84 comprises a through hole 86formed therein. The mounting tab 286 of the heat dissipation board 28comprises a threaded hole 288 formed therein to correspond to thethrough hole 86. A screw 880 is set through the through hole 86 toengage the threaded hole 288 so as to fix the front bezel 8 and the heatdissipation board 28 to each other.

The mount section 284 supports the mold frame 4 thereon. The mold frame4 has an end section 42 positioned against an outer side of the mountsection 284 that is opposite to the backlight source 26 and locatedbetween the mounting tab 286 and the mount section 284.

The backlight source 26 is mounted to the mount section 284 tocorrespond to a light incidence surface of the curved light guide plate24.

The backplane 22 is made of a steel plate having a thickness of 0.8-1mm.

The heat dissipation board 28 is made of an aluminum plate.

The backlight module 2 further comprises a bottom reflector plate 23arranged on a bottom surface of the curved light guide plate 24 thatfaces the backplane 22 and an optical film assembly 25 arranged abovethe curved light guide plate 24 and located in the mold frame 4.

The mounting tab 286 of the heat dissipation board 28 is directlycoupled to the side plate 84 of the front bezel 8 so that a side platethat is required in a conventional backplane can be eliminated therebyshortening the distance between the side plate 84 of the front bezel 8and the curved light guide plate 24 and reducing the width of the frontplate 82 of the front bezel 8 to help achieve bezel slimming of thecurved liquid crystal display device. Taking the backplane 22 of theinstant embodiment that is made of a steel plate having a thickness of0.8-1 mm as an example, the width of the front plate 82 of the frontbezel 8 can be reduced by 0.8-1 mm.

Further, the mounting tab 286 of the heat dissipation board 28 isdirectly coupled to the side plate 84 of the front bezel 8 and an endsection 42 of the mold frame 4 is positioned against the outer side ofthe mount section 284 that is opposite to the backlight source 26 andlocated between the mounting tab 286 and the mount section 284, thedistance between the side plate 84 of the front bezel 8 and the curvedlight guide plate 24 can be further shortened to help achieve bezelslimming of the curved liquid crystal display device.

In summary, the present invention provides a curved liquid crystaldisplay device, which comprises a mounting tab extending from a heatdissipation board toward a side plate and a front bezel is fixed to themounting tab to have the front bezel and the heat dissipation boardfixed to each other without any arrangement of a side plate of abackplane at the fixing site and effectively shorten the distancebetween the front bezel and the curved light guide plate to help achievebezel slimming of the curved liquid crystal display device.

Based on the description given above, those having ordinary skills ofthe art may easily contemplate various changes and modifications of thetechnical solution and technical ideas of the present invention and allthese changes and modifications are considered within the protectionscope of right for the present invention.

What is claimed is:
 1. A curved liquid crystal display device,comprising: a backlight module, a mold frame mounted on the backlightmodule, a liquid crystal display panel arranged on the mold frame, and afront bezel arranged on the liquid crystal display panel, the backlightmodule comprising a backplane, a curved light guide plate arranged inthe backplane, a backlight source arranged in the backplane, and a heatdissipation board receiving the backlight source mounted thereon, theheat dissipation board comprising a bracket section and a mount sectionthat is connected, in an inclined manner, to the bracket section, thebracket section being mounted to the backplane, the backlight sourcebeing mounted to the mount section, the front bezel comprising a frontplate and a side plate connected to the front plate and inclined withrespect to the mount section of the heat dissipation board with a gaphaving a wedge-shaped cross section defined between the side plate andthe mount section, the mount section comprising an outside surfacefacing an inside surface of the side plate of the front bezel and amounting tab projecting from and spaced from the outside surface andextending toward the side plate to define an end face that is spacedfrom the outside surface of the mount section and corresponds to and isin contact engagement with the inside surface of the side plate of thefront bezel, the mounting tab being coupled to the side plate throughthe end face in surface contact with the inside surface of the sideplate so as to couple the front bezel and the heat dissipation boardtogether.
 2. The curved liquid crystal display device as claimed inclaim 1, wherein the side plate comprises a through hole formed thereinand the mounting tab of the heat dissipation board comprises a threadedhole formed therein to correspond to the through hole, a screw beingreceived through the through hole to engage the threaded hole so as tofix the front bezel and the heat dissipation board to each other.
 3. Thecurved liquid crystal display device as claimed in claim 1, wherein themount section supports the mold frame thereon.
 4. The curved liquidcrystal display device as claimed in claim 3, wherein the mold frame hasan end section positioned against the outside surface of the mountsection that is opposite to the backlight source and located between themounting tab and another portion of the mount section.
 5. The curvedliquid crystal display device as claimed in claim 1, wherein the sideplate of the front bezel is arranged to be inclined with respect to themount section.
 6. The curved liquid crystal display device as claimed inclaim 1, wherein the backlight source is mounted to the mount section tocorrespond to a light incidence surface of the curved light guide plate.7. The curved liquid crystal display device as claimed in claim 1,wherein the backlight module comprises a bottom reflector plate arrangedon a bottom surface of the curved light guide plate that faces thebackplane and an optical film assembly arranged above the curved lightguide plate and located in the mold frame.
 8. The curved liquid crystaldisplay device as claimed in claim 1, wherein the backplane is made of asteel plate.
 9. The curved liquid crystal display device as claimed inclaim 8, wherein the steel plate has a thickness of 0.8-1 mm.
 10. Thecurved liquid crystal display device as claimed in claim 1, wherein theheat dissipation board is made of an aluminum plate.
 11. A curved liquidcrystal display device, comprising: a backlight module, a mold framemounted on the backlight module, a liquid crystal display panel arrangedon the mold frame, and a front bezel arranged on the liquid crystaldisplay panel, the backlight module comprising a backplane, a curvedlight guide plate arranged in the backplane, a backlight source arrangedin the backplane, and a heat dissipation board receiving the backlightsource mounted thereon, the heat dissipation board comprising a bracketsection and a mount section that is connected, in an inclined manner, tothe bracket section, the bracket section being mounted to the backplane,the backlight source being mounted to the mount section, the front bezelcomprising a front plate and a side plate connected to the front plateand inclined with respect to the mount section of the heat dissipationboard with a gap having a wedge-shaped cross section defined between theside plate and the mount section, the mount section comprising anoutside surface facing an inside surface of the side plate of the frontbezel and a mounting tab projecting from and spaced from the outsidesurface and extending toward the side plate to define an end face thatis spaced from the outside surface of the mount section and correspondsto and is in contact engagement with the inside surface of the sideplate of the front bezel, the mounting tab being coupled to the sideplate through the end face in surface contact with the inside surface ofthe side plate so as to couple the front bezel and the heat dissipationboard together; wherein the side plate comprises a through hole formedtherein and the mounting tab of the heat dissipation board comprises athreaded hole formed therein to correspond to the through hole, a screwbeing received through the through hole to engage the threaded hole soas to fix the front bezel and the heat dissipation board to each other;wherein the mount section supports the mold frame thereon; wherein themold frame has an end section positioned against the outside surface ofthe mount section that is opposite to the backlight source and locatedbetween the mounting tab and another portion of the mount section;wherein the side plate of the front bezel is arranged to be inclinedwith respect to the mount section; and wherein the backlight source ismounted to the mount section to correspond to a light incidence surfaceof the curved light guide plate.
 12. The curved liquid crystal displaydevice as claimed in claim 11, wherein the backlight module comprises abottom reflector plate arranged on a bottom surface of the curved lightguide plate that faces the backplane and an optical film assemblyarranged above the curved light guide plate and located in the moldframe.
 13. The curved liquid crystal display device as claimed in claim11, wherein the backplane is made of a steel plate.
 14. The curvedliquid crystal display device as claimed in claim 13, wherein the steelplate has a thickness of 0.8-1 mm.
 15. The curved liquid crystal displaydevice as claimed in claim 11, wherein the heat dissipation board ismade of an aluminum plate.